•A test tube is filled with pond water rich with protists like Euglena.

•A piece of dark paper is wrapped around the bottom of the test tube and the top of the test tube becomes green, rich with algae.
Based on these observations, which question could be answered?

Are protists sensitive to changes in position?

Are protists sensitive to changes in light?

Are protists present in pond water?

Are protists unicellular or multicellular organisms ?

Question

•A test tube is filled with pond water rich with protists like Euglena.
 
•A piece of dark paper is wrapped around the bottom of the test tube and the top of the test tube becomes green, rich with algae.
Based on these observations, which question could be answered? 

Are protists sensitive to changes in position? 

Are protists sensitive to changes in light? 

Are protists present in pond water? 

Are protists unicellular or multicellular organisms ?

agreene · Answer

Are protists sensitive to changes in light? 

as it happens, Euglena is a photoflagellate.

anonymous · Answer

Are protists sensitive to changes in light?